Samuel j



8.1. DUNKLEY.

PlTTER KNIFE.

APPLICAUON FILED 1m18.191s

Snom/vilo@ AMEL J. DDNKLEY narran satana* ortica.

SMUEL J. DUNKLEY, OE KALAMAZOO, MICHIGAN, ASSIGNOR TO DUNKLEY COIMPANY. OF KALAMAZO, MECHIGAN, A. CORPORATGN QF IidC-IIGAN.

PTTER-KNIFE.

Specification of Letters Patent.

Patented Mar. 1, 1921.

application filed January 28, 1919. Serial No. 273,593.

To @ZZ w from t may concern Be it known that I, SAMUEL J. DUNKLEY, a citizen of the United States, residing in the city and county of Kalamazoo, State of lll/lichigan, have invented certain. new and useful improvements in Pitter-Knives, of which the following' is a' specification.

This invention relates to an improved construction of pitter knives. The object of the invention is to provide an improved actuating means for oscillating a curved pitter knife.

Objects of the invention pertaining to de tails and economies of construction and operation will definitely appear from the detailed description to follow.

ll accomplish the objects of my invention by the devices and means described in the following specification. The invention is clearly defined and pointed out in the claims.

A structure constituting a preferred embodiment of my invention is clearly illustrated in the accompanying drawing forming` a part of this specification, in which:

Figure l is a. longitudinal detail sectional view through my improved pitter knife.

Fig. H is an end elevation view of the structure as it appears in Fig. l.

HI is a detail longitudinal sectional view through a modified form.

Fig. lV is a detailed end elevation view of a modification appearing in Fig. HI.

llig. V is an enlarged detail view showing the serrations of the blade.

ln the drawing similar reference charac ters refer to similar parts throughout the several views and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines.

Considering the numbered parts of th'e' drawing, a handle 1 is provided with an axially disposed driving" shaft 2, which is supported in bushings 3, l within the hanu dle. Any suitable driving means as a liexiu ble shaft connection at 5 is provided for driving` the shaft.

A bracket 6 is provided on the end of the handle and on this is supported a rocker 7 by pivot 8, the axis of the pivot being, paral lel with the axis of the driving shaft 2. On

this rocker is supported a curved cutting blade 9, preferably beveled on its outer side to a sharp edge on its inner side. This is secured in place by screws 9 into the rocker 7: The curve of the blade is an arc of a circle the center of which is the pivot of oscillation.

An arm 10 is provided extending outwardly from the pivot point of the rocker andvis slotted at 11 with a radial slotv and this is engaged by a wrist pin 12 on the end of the shaft 2, so that when the shaft rotates vthe blade 9 is oscillated rapidly back and forth in the direction of its cutting edge. The shaft 2 is preferably revolved at the rate of about 1800 revolutions per minute, so that the oscillation of the knife is very rapid and as the knife is beveled on the outside it is very readily guided into the flesh of a peach and the pit removed.

In the modified form of Fig. Ill, the handle 1 is of the same form, provided with the axially disposed shaft 2 in the bearings 3 and a, with the flexible shaft connection 5. The bracket 13 is provided on which is supported an axially disposed roller 14. A roller 15 is on the end of the shaft 2 and cooperates with the roller 14e to carry a cir cular blade 16 around in a circular path. The blade is effectively guided by guides 17, 17 each side of the roller 14, so that when the shaft is rotated the blade 16 travels very rapidly around. It has the edge serrated which Quickly cuts its way through. The edge might be plain but a serrated edge is found to be moreeflective.

Having thus described my invention, what l claim as new and desire to secure by Let ters Patent is:

1. The combination of a handle, an axially disposed revoluble shaft therein, a bracket on the end of the handle, a rocker pivoted on said bracket on an axis parallel with said shaft, a slotted arm on said rocker, a wrist pin on said revoluble shaft engaging the said slotted arm to rock the same, and an arc shaped blade carried by said rocker, all coacting substantially as described for the purpose specified.

Q. In a pitter knife the combination of a handle, an axially disposed revoluble shaft therein, a cutter With a curved blade supported to be actuated in the direction of the said blade and supported so that its axial center is parallel with the axis of rotation of the said shaft, means for actuating said knife from said shaft, coacting as specified.

In witness whereof, I have hereunto set my hand and sea] in the presence of two witnesses.

SAMUEL J. DUNKLEY.

Witnesses LUELLA G. GREENFIELD, MARTHA J. GREGORY. 

